Elements of nature

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Across
  1. 3. unwanted residual material after the end of a process
  2. 5. is a perennial plant with a long trunk
  3. 7. streams of water on the surface that are elongated
  4. 9. water vapor close to the ground
  5. 10. things, are subjects who manage nature
  6. 12. a steep section of land
  7. 14. has a shallow depth
  8. 15. a large, deep natural hole
  9. 16. is a monocot plant that has leaves that grow from the base of the stem
Down
  1. 1. is a condition that changes every time as a important variable in nature
  2. 2. a mixture of gases found on the earth's surface
  3. 4. Is a part of nature that giving or support the growth of plants
  4. 6. located in the coastal area of ​​the sea
  5. 8. is a Elements of nature that helps animals, plants and human to survive
  6. 9. is a form of land that stands out above the surrounding area
  7. 11. the earth's crust is composed of minerals and organics
  8. 13. is an area that is overgrown with trees and plants